Immobilized metal ion-containing ionic liquids: Preparation, structure and catalytic performances in Kharasch addition reaction and Suzuki cross-coupling reactions

A series of immobilized metal ion-containing ionic liquids on silica surfaces (ImmM_IL) were prepared and characterized by EXAFS, UV–vis, TGA, and elemental analysis. The prepared ImmCu2+_IL was found to be more active than unsupported [Bmim]2CuCl4 ionic liquid and reusable for Kharasch addition reaction between CCl4 and styrene. The prepared ImmPd2+_IL was active and reusable for Suzuki cross-coupling between phenylboronic acid and arylhalide. Throughout this study the present catalyst preparation method was confirmed to give efficient and reusable catalysts.

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